typedef struct bt_self_component_source bt_self_component_source;
typedef struct bt_self_message_iterator bt_self_message_iterator;
typedef struct bt_self_plugin bt_self_plugin;
-typedef struct bt_self_port bt_self_port;
-typedef struct bt_self_port_input bt_self_port_input;
-typedef struct bt_self_port_output bt_self_port_output;
typedef struct bt_stream bt_stream;
typedef struct bt_stream_class bt_stream_class;
typedef struct bt_trace bt_trace;